Disposable water bag syringe



Dec. 30, 1952 s. L. DIACK 2,623,522

DISPOSABLE WATER BAG SYRINGE Filed Feb. 14, 1948 's Sheets-Sheet 1VCMJ/M/ 7 TTUF /VZiWE Dec. 30, 1952 s DIA K 2,623,522

DISPOSABLE WATER BAG SYRINGE Filed Feb. 14, 1948 3 Sheets-ShetZ SAMUELL. DIACK E7 MM/M Dec. 30, 1952 s. L. DIACK 2,623,522

DISPOSABLE WATER BAG SYRINGE Filed Feb. 14, 1948 3 Sheets-Sheet 3 iMM M'Patented Dec. 30, 1952 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to a novel and improved construction for a waterbag syringe.

Conventional syringe devices are ordinarily made of relatively expensivedurable material which is adapted for repeated use. When used in aclinic or hospital, the complete device must be sterilized after eachuse, entailing a considerable amount of expense and handling of thedevices and requiring a large supply of syringes to be kept on hand inorder to have a sufficient number ready for use at any time. Forindividual personal use in the home it is also customary to use asimilar, re-usable type of device which, even if not sterilized, must bewashed, dried and stored after each use, occasioning inconvenience inthe home and still greater inconvenience while traveling.

Objects of the present invention are to provide a syringe of veryinexpensive construction and one which is readily disposable so that itmay be used once and then discarded to obviate the problems attendingthe re-use of such devices. Other objects are to provide a novel type ofsyringe device which may be made at low cost from paper or otherinexpensive sheet material; to provide a syringe device made from asingle blank of material which is rolled, folded and sealed in a novelmanner; and to provide a complete syringe device including a water bag,connecting tube and nozzle made entirely from paper or other sheet orfilm material. Other objects reside in the novel form of the blank fromwhich the device is made, the provision of a bag which may be carried inan inverted position without a stopper, the manner in which the seamsare formed, the manner in which the nozzle is formed, and in the methodof forming the device from a blank of material.

The present device comprises a water bag, connecting tube and nozzlewhich may be of unitary construction formed from a single piece or blankof fiat material. Different kinds of waterproof flexible sheet materialmay be used for the blank :as will occur to persons skilled in the art,one such material which is particularly suitable for making aninexpensive and easily disposable syringe being a waterproof paperparchment. Also various sealing means may be used to unite the joints inthe paper, such as a waterproof glue, a plastic heat sealing coating, orthe blank itself may be cut from a material which may be heat sealed byapplying heat to the surfaces to be united. The blank is first cut to apattern to form the bag, connecting tube and nozzle, and if the blankitself is not formed from a heat sealing material it is coated with thewaterproof sealing material, as will presently be explained in detail.The blank may be merely coated on its surface with heat sealing,waterproof material in the form ofa film, or it may be thoroughlyimpregnated therewith, and in either case the material may be appliedonly in certain areas, or throughout. The nozzle is formed by rolling upa sufficient length of a portion of the paper blank to form a stiff tubehaving the desired nozzle length and diameter. After the nozzle has beenrolled to form a stiff tube, the rest of the blank forming the water bagand connecting tube is folded over and the edges sealed together to forma liquid container. As a final .step the nozzle is preferably dipped ina synthetic resin compound or the like to form a smooth, hard surfacethereon. In the completed device a fold or bending line in the paperextends from the upper end of the water bag along one side thereof andtoward the nozzle so that the water bag will collapse to-a flatcondition for folding into a compact package.

Still further objects and advantages will be apparent as the descriptionproceeds with reference to certain preferred embodiments of theinvention illustrated in the accompanying drawings, but it is to beunderstood that the drawings are for the purpose of illustrating theinvention and not for the purpose of limiting the invention, as the sameis to be limited only by the terms of the appended claims. 1

In the drawings:

Figure 1 is a plan view of one form of blank from which the syringe maybe made;

Figure 2 is a side elevation view of a completed syringe made from theblank shown in Figure 1; t

Figure 3 is a fragmentary elevation view showing the first step informing the device from the blank shown in Figure -1;

Figure 4 is a sectional view taken on 44of Figure 3; 1

Figure 5 is a sectional view taken on the line 55 of Figure 3;

Figure 6 is a fragmentary view showing a second step in the manufactureof the device;

Figure 7 is a sectional view taken on the line 5-1 of Figure 6; I t

Figure 8 is a sectionalview taken on the line 88 of Figurefi;

Figure 9 is a fragmentary side elevation view of the partially completeddevice shown in Figure 6 after a further operation has been performed;

Figure 10 is an enlarged fragmentary side elethe line tioned edges I Iand I2;

vation view showing the final sealing operation;

Figure 11 is a front view of the completed device shown in Figure Figure12 is a sectional view taken on the line l2l2 of Figure 11;

Figure 13 is a sectional view taken on the line 13-43 of Figure 11;

Figure 14 is a sectional view taken on the line ld-ld of Figure 2;

Figure 15 is a plan view of the completed device shown in Figure 2;

Figure 16 is an elevation View of a modified form of syringe;

Figure 17 is a cross sectional view taken on the line l7ll of Figure 16;

Figure 18 is a cross sectional View taken on the line l8--i8 of Figure16; U p

Figure 19 is a fragmentary view of the paper blank used to form thesyringe shown in Figure 16;

Figure 29 5 anew .sh wi sth a a ls. nd tube portion of the syringe ofFigure 16' in a partially completedstatm Fi is fe eai n: a i ir sm'eldlongitudinalse onal viewor the nozzle tip; and

aisur 'z i a ne s i wiugt iesvrinse ofilli ure 16 ininverted'positionforfilling and carryi i f n wiai e r wi Fisu lg i on fof an i o Wh ..h6 Complete syringe maybe forrn 'Ifhe numeral itdesignates the upper portionpt the blank which is de t form i iwashesthis. sad being of substantial width; and hgying a plain edge l and anadhesive edge l 2 It the blank is'cut from a sealing m t ria ailsdhsveicqsi n i n n arri and n suq t se heshad n o the drawing to indicateadhesive is to be understood w designate me e y i, ames of the la v areusedto forrn t he necessary seals. The socalled plain edge H would then,of course'have the same potentialadhesive properties as the socalledadhesive edge [2. In any cas e,the c-onventional showing of adhesive isadapted primarily to designate the location'of'the seams rather thanthe'type of seal or limits of the adhesive material. A n Y To makeatapered bottom' on the water bag the upper portion 10 alsohasanjncl-ined plain edge I3 and-an inclined adhesive edge Id. these twoedges convergingtowardsa relatively long narrow portion IEdesignedtOfOrin the connecting tube between the water bag and the nozzle. Theportion l5 has a plain edge it and adhesive edge H, which 'ed'gesareiparallel with each other and also with thepreviously men- 7 I Theportion I 5 may also be tapered if desired. The lower end of the portionI5 is connectedwith an adhesiveportion' [8 extending laterallyto a"considerable distance and terminating in an 'uncoated. as Is. At thejuncture of the pprtions Sand 18 in the illustrated embodiment the edgeifi is-exte nded into the portion 18 in the form-ofvertical slit or cut20, and a "short horizontal cut 21 shade at right angles to the cutZOto'foriria sduare corner therebetween. The numerals wand 2i may beconsidered to be applied to a lower corner of 'the'p'ortion I5'which isthereby out free from. the portion l8. It Will be observed to Figure 1that the portion [8 does not examt atjright angles to the verticaledgeslli aindgl], but is cut, preferably at an 'oblidue angle 'as'shown,to make a tapered nozzle tip when'rolled.

The nozzle is formed by starting to roll the lateral end portion It on asmall cylindrical mandrel with the remainder of the adhesive portion 18rolling up to a thickness of several layers as shown in Figures 3 and 5.The thickness or" the material is, of course, exaggerated in thesectional views to show more clearly the forzn of construction. It afairly good grade of parchment paper is used, the wall thickness shownin Figure 5 would actually be considerably thinner in relation to theinside diameter of the nozzle, although these proportions are notmaterial and the invention may be practiced with either thici; or thinpaper, or other sheet or film material. The edge formed on the portionEd by the cut 2? is designated by the numeral 283a in Figures 3 and 4and the edge at right angles thereto formed by the cut 25 is designatedby the numeral 25a.

Then, instead of rolling up the edge is, which would cause the corner23, 25 to fit into the corner Eda, Zia, the edge ii is rolled around tooverlie the corner Zea, Zia and unite with the edge E6; 2d as shown inFigures 6 and 7 to form an outstandingflange having a width'e ual to thewidth of the indicated adhesive on the edge ll. When the edges is and i?are thu. brought together, the edge 13 is also folded over even with theedge It and theedge ii is over even with the edge i2. When the edges ii,I3 and l 6 are all united with-the respective edges ills and H, theportions 59 and 55 form water bag and tube as shown in Figures 2, l4 and15. The side walls are shown in somewhat fiat tened' condition as theymay be left for packing and shipment, but it is obvious that when theWater bag and tube portions are filled with l the sides will round outunder the liquid p to provide the necessary capacity.

Figure 9 shows a side view of the nozzle portion shown in Figure 6 butwith a small adhesive 25 on the outside of the edge It at the end Theflange formed by the edges l l and 29 is th 1 bent over and flattenedagainst the nozzle tu on the vertical and diagonal fold lines 26 and Fshown in Figures 10 and 11, in which position it is held by the adhesiveareas at H and The line 28 designates the upper edge of the adhesivearea 25 which becomes a horizontal crease line or transition pointbetween the lower end of the flange 17,20 which is flattened against thenozzle and the upper part of thi flange which is left outstanding. Theflattened portion or" flange isshown in Figure 13, and theoutstandingportion of the flange is shown in Figure '2. The sectionshown in Figure12 is taken in the transition between the line 23 and the plane of thesection in Figure '7. These three sections show the device as it appearswhen completed, while the sectional View in Figure 8 illustrates anuncomet d s e l If the edges it and ii are united by a lap joint insteadof a flange joint, the transition between the nozzle-portion l8 and thetube portion is greatly simplified, but then the transition between thetube portion H5 and the water por tion id is more difficult to mal eleak-tight. farious other lapping and sealing arrangements may bedevised to make the necessary joints and transitions as will occurtopersons skilled in the art in the light of the present disclosure.Another form of construction isshown in a second embodiment to bedescribed presently. Stiil other lapping and sealing arrangements toaccomplish the same purpose which fall within the scope of the appendedclaims are to be included in the invention as equivalent modificationsand variations thereof.

The mandrel upon which the nozzle portion is rolled may be used toprovide a rigid backing for the application of heat and pressure, whennecessary, for thermosetting or thermoplastic sealing materials. Theflange joints in the tube and water bag portions may, of course, bepressed against a flat surface. After the various joints have beencompleted and the mandrel removed from the nozzle, the nozzle is dippedin a synthetic resin or other compound to form a smooth, hard, coating29 thereon, covering the stepped edges of the spiral rolling of thepaper,

If desired, the rolled nozzle I8 may be omitted and a conventionalnozzle attached to the tube portion |5 in the usual manner to stillobtain the principal advantages of the invention through the use of aninexpensive, readily disposable bag and connecting tube. Conventionalnozzles so employed may be disposed of with the bag, or sterilized andre-used on new bags.

Figures 16 to 22 illustrate a syringe 33' embodying the generalprinciples of the invention in a modified form of construction. In thisembodiment a single blank 3| of the general shape shown in part inFigure 19 is rolled and folded to form a nozzle 32, tube 33 and waterbag 34. The opposite edges of the blank are folded over and united toform the water bag 34 of any desired shape, the sealed joint along theedges of the blank terminating at the point 35 to leave a filler opening36 at a height which will provide the desired fluid capacity for thewater bag. Above the filler opening 36 the edges of the blank are unitedin a vertical joint 31 and a top horizontal joint 38 to form an upperbag portion 39, which joints are extended in the upper corner of the bagto include an area around an eyelet 43 for supporting the bag and itscontents. If relatively thin material is used for the blank, suitablereinforcement may be provided around the eyelet to support the necessaryweight of Water without tearing the material.

The syringe shown in Figure 16 is filled by inverting it and pouring inwater through the filler opening 36 substantially to fill the upper part33 of the bag as shown in Figure 22. The extended seal around the eyelet40 prevents leakage at this point while the bag is inverted. The blankis preferably proportioned so that the upper portion 39 will hold thesame amount of water as the water bag portion 34 and tube 33, whereby,when the bag is inverted, it may be safely filled up almost to thefiller opening 33 as shown in Figure 22. This form of construction makesit easy to carry a number of filled syringes without loss of theircontents by merely grasping the tubes 33 of all the syringes together inone hand. In this position the syringes may be subjected to considerablejostling without loss of water through the filler openings. When thesyringe is to be used, it is merely tipped or rotated in acounterclockwise direction from the position shown in Figure 22 to causethe water in the part 39 to run down into the tube 33 and fill the waterbag portion 34 to the approximate level shown in Figure 16, whereupon itmay be hung by the eyelet 40 upon a hook provided for the purpose.

To form the syringe from the blank 3|, shown in Figure 19, the laterallyextending portion 4| is first rolled on a mandrel of the proper size toform the nozzle 32. The lower edge 42 of this portion of the blank isslightly curved, as shown,

to form a rounded end 42a on the nozzle tip, and the horizontal lengthof the portion 4| of the blank is sufficient to provide the desired wallthickness in the nozzle, the size of the water passage through thenozzle, of course, being determined by the size of the mandrel uponwhich the portion 4| is rolled.

The insertable nozzle portion of the blank 4| terminates at a verticaledge 44 to leave a long, offset, horizontal edge 45 extending from thenozzle portion 4| to the tube forming portion 46 of the blank. Theportion of the blank having the horizontal lower edge 45 forms a shankon the nozzle and is designated by the numeral 41. The vertical edge 44is preferably about two inches long and its purpose is to offset theedge 45 to form a perpendicular shoulder 45a on the nozzle, as shown inFigure 20, to serve as a guard to limit the depth of insertion of thenozzle into the patient. The horizontal portion 41 of the blank isextended to suflicient length to build up the desired shoulder height at45a, depending on the thickness of the material of the blank. Thenumeral 50 designates a seal area which may have an adhesive coatingextending along the edges of the portions 4|, 41 and 45 in the mannershown to hold the material tightly rolled in the nozzle portion of thesyringe and to form the necessary marginal joint in the tube and bagportions. It will be apparent that by rolling the portion 4| rathertightly on a mandrel and securing the successive layers together atleast in the designated seal area, a sufllciently stiff and serviceablenozzle 32 may be formed. The additional material in the portion 41 ofthe blank used to form the shoulder 45a makes a still larger and stifierbase or shank portion 5| on the nozzle where it joins with the tube 33.

The nozzle 32 may be dipped in a suitable coating composition 52 toprovide a smooth surface thereon, especially over the curved end 42awhere the edge 42 of the paper forms a series of squarecorner steps inits successive layers. The coating material 52 is preferably applied toa sumcient thickness to fill in the stepped corners and provide asmooth, rounded contour on the end 42a, as shown in the magnified crosssectional view in Figure 21.

It will be apparent that after the nozzle 32 has been formed and thelast part of the horizontal portion 41 is being rolled to. complete thenozzle shank 5|, the lower end of the tube 33 will be formedconcurrently from the blank portion 46. Thus, when the rolling of theshank portion 5| is completed, the seal area 50 on the inside surface ofthe outer edge of the blank portion 46 will roll over on top of theouter surface at the edge 55 to form a simple lap joint to establish anintegral water-tight connection between the lower end of the tube 33 andthe nozzle shank 5|. A lap joint, however, is an unsatisfactory form ofjoint to follow the reverse curves in the bag portion 34, because thematerial of the blank cannot readily be folded on a curve. Whereas thelap joint is formed on the shank 5| on a cylindrical surface without anyfolding of the paper, it is preferred to form the other sealed joints ona flat supporting surface with one side of the blank folded over to lieflat on the other side in the manner described in connection withFigures 1 and 2, making it desirable to change to a difierent type ofjoint above the nozzle.

The type of joint employed along the straight edges 31 and 38, and alsoalong the reversely curved edge 56, is, therefore, designated as a flapof flahgejoint as shown in Figure 17, to distinguish mm the lap joint inthe tube '33 near the nozzle, as shown in Figure 18. The term flangejoint is employed to describe the form of joint shown in "Figure 17because when the sides of the bag are filled out with liquid the edgeportions of the two sides of the blank extend in the same direction andare disposed to stand out like a'fiange in substantially perpendicularrelation to the'adjacent surface of the container, while in a lap joint,as shown in Figure 18, the opposite edge portions of the blank areoppositely directed and lie in the contour of the container wall whenviewed in cross section. It is a parent that the lap joint shown inFigure 18 is most suitable on a cylindrical shape, and that the flangejoint shown in Figure 17 is most 'suit able to follow a curved edgewhere the bag is to be pressedflat.

Thus, in the sealing operation there must be some kind of a transitionbetween the lap joint on the cylindrical surface of the nozzle shank atthe lower end of the tube 33 and the flange joint in the upper part ofthis tube and along the curved edge 56. If the sealing operationrequires a continuous solid backing for pressing the parts together toform the joints, the mandrel on which the nozzle portion is rolled mayhave an upper end extending from the shank portion 51 graduallyflattened in a wedge shape to effect the transition from a, cylindricalsurface to a flat surface, but the invention is not limited to the useof any particular form of mandrel for this purpose.

Figure shows one form of transition from the lap joint on the nozzleshank 5! to the flange joint on the upper part of the tube When thenozzle shank ha been rolled to the point shown in Figure 20, the underedge 55 of the portion of the blank is folded over and a diagonal crease56 is formed, beginning at a point 51 some distance from the nozzle andextending down to a point near the shank 5i where the tube 33, ofcourse, cannot be pressed flat but must begin to assume an oval shape incross section which gradually thickens to a circular shape at the shank.If a flattened mandrel is used, the crease 56 would disappear at theupper end of the mandrel. Thus, when the top edge 58 is rolled upon theshank 5|, it forms a lap joint on the shank 5| and also on the lower endof the tube 33 in those portions having oval cross sections. However,where the tube 33 is pressed fiat, the seal area on the inside surfaceadjacent the edge 58 will attach itself both to the outer surface 59,which is folded over by the crease 56, and to a portion 68 of the insidesurface which is exposed beyond the edge 55. The width of the seal areaon the outer surface will thereby gradually diminish and become zero atthe point 51, while the width of the seal area on the inside surfacewill gradually increase up to the point 51, whereby the seal area 51'!will be caused to unite with both surfaces 59 and G9 in the transition.Between the point 51 and the upper end ofthe seal at 35 a simple flangejoint will be formed as shown in Figure 1'7. In this way the tube 33 mayhave a gradual taper, but it preferably will not enlarge appreciablybetween the nozzle and the point 5?. Above the point 51 the curve 56 maybe out to any shape desired for convenience in handling the necessaryquantity of water.

While the seal area 50 is shown on the drawing as an adhesive coating,the shading is employed primarily merely to show the location of thesealed joints and not to constitute a limitation to aspecific type ofseal. When a paper or other material not possessing inherent selfsea1ingproperties is used for the blank, a waterproof adhesive, preferably ofthe heat sealing type, may be applied to the area 50 along edges of theblank as shown, but when the blank is out from a material which may beheat sealed without the addition of any adhesive coating the shaded area56 merely designates the location of the joints thus formed. Suitableheat sealing materials and the methods of forming heat sealed jointstherewith are well known in the art.

It is also possible to use ordinary inexpensive, low strength, waterabsorbent paper by coating the paper over its entire area with a thin,tough film of suitable waterproof heat sealing material. Ihe paper maythen merely form a backing for the film, which in itself provides thenecessary wet strength and heat scaling properties. The joints areformed by applying heat to the approximate area designated while theedges or parts are held in contact with each other. If heat is appliedto the whole nozzle the plastic material of the film will flow into andimpregnate the paper in the nozzle, making a very hard and serviceablenozzle. Also, the plastic film may he applied to the paper to thoroughlyimpregnate it in the first place, before the blanks are cut or folded,to make a relatively weak and inexpensive paper suitable for thepurpose.

The embodiment shown in Figure 16 may also be made without including thenozzle as an integral part of the original blank, without sacrificingthe major advantages of the invention. In such case a conventionalnozzle may be attached to the lower end of the tube 33, therebyobviating the transition to a lap joint.

Regardless of the type of nozzle used, the arm bodiment of Figure 16provides a disposable syringe bag which is inexpensive to manufactureand which may be compactly folded in a flat package. The upper portion39 of the bag provides a convenient measuring and carrying container forthe water before the bag is turned upright for use. A number of thefilled bags may easily be carried by their tubes 33 without spilling thecontents and Without requiring stoppers in the filler openings orpinching devices on the nozzle tubes. After use, the whole device may bedisposed of, thereby relieving hospital and clinic facilities of aconsiderable amount of washing and sterilizing.

Having now described my invention and in what manner the same may beused, what I claim as new and desire to protect by Letters Patent is:

1. A Water bag syringe comprising a sheet of flexible material folded onits longitudinal center line and sealed at its overlapped edges to forman integral water bag and connecting tube, and having a tubular nozzleformed on the end of said connecting tube by a rolled portion of saidsheet.

2. A water bag syringe comprising a piece of material precut to a shapecorresponding with the contour of the finished syringe, and folded andsealed to form a water bag and connecting tube, a nozzle on saidconnecting tube formed from a strip of the same piece of materialextending laterally from the portion thereof from which the connectingtube is formed, the outer edge ofsaid nozzle forming strip being cut atan angle to the connecting tube portion of slightly greater thandegrees, so that when said strip is rolled to form the nozzle, the outeredge is wound in a spiral to form a tapered tip for said nozzle; and acoating on said tip to form a smooth Number contour over said spirallywound edges. 1,854,091 SAMUEL L. DIACK. 1,865,555 2,099,412 REFERENCESCITED 5 2,213,057 The following references are of record in the2,328,569 file of this patent: 2,429,123

UNITED STATES PATENTS Number Name Date 10 Number 1,603,001 Carter Oct.12, 1926 1,929 1,676,102 Lynam July 3, 1928 385,921

Name Date Young Apr. 12, 1932 Brown July 5, 1932 Seidler Nov. 16, 1937Sponsel Aug. 2'7, 1940 McGaw Sept. "7, 1943 Crowley Oct. 14, 1947FOREIGN PATENTS Country Date Great Britain Jan. 217, 1896 Great BritainJan. .5, 1933

